Thank you for the offer Ashnak, but I'm going to leave it for a while. I might take myself to Colonia(?) to see what's there...
When you give it another try you might find that it's quite simple in concept. Sometimes the instruction is unclear though and you have to wing it a little.
I also find the SRV and turrent aiming to be annoying generally (I'm using an X-52 hotas). I use the turret for shooting pylons but just stay in normal mode to get a lock on sentinels. Pretty easy prey.
Here's what I was doing anyway. Though I still need to get a fourth blueprint and mats next time.
1) Land here while making sure you have point defence on your ship to shoot down sentinel missiles.
2) Head to the first pylon in your SRV and shoot the blue light till it charges. It's not forgiving when it comes to accuracy so I prefer to get close. The timer will start but it's not an issue when you know the layout. I've usually already opened the cargo hatch at this point so I don't forget for later when I grab materials (same with surface mining).
3) Follow the red line to shoot all the pylons. You may need to scoop up a Guardian Relic along the way if you don't have one. Just shoot the tower thingy. You'll drop this on the X you see on the floor by the alter.
4) A ball thing will raise out of the alter with something inside. Scan that in analysis mode. You now have a blueprint frangment you need to unlock a module type and will be attacked by several sentinels.
5) You can now collect materials at your leisure. Follow the green line to collect materials from the towers. They usually have three panels to shoot off and some materials will drop. You can obsviously scan for Obelisk Data along the way but I haven't given that as much attention as I maybe should have. I dont know how important it is.
Like I say, I just need a fourth blueprint since you can only store enough mats to unlock four module types anyway. It should be quicker to relog and collect materials after that.